/*
 * Copyright (c) 2017. jiangyc <710183940@qq.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.jiangyc.bingpictures;

import com.jiangyc.bingpictures.spi.PictureLoader;

import java.util.Iterator;
import java.util.ServiceLoader;

public class BingPictures {
    /**
     * 所有的PicturesSpi
     */
    private static final ServiceLoader<PictureLoader> loader;

    static {
        loader = ServiceLoader.load(PictureLoader.class);
    }

    public static Iterator<PictureLoader> iterator() {
        return loader.iterator();
    }

    public static PictureLoader getPictureLoader() {
        if (iterator().hasNext()) {
            return iterator().next();
        }
        throw new RuntimeException("Has no implement...");
    }
}
